public void Start(object argsObject)
{
PlcParameter plcParameter = argsObject as PlcParameter;
try
{
WoopsaAdsServer serverConnection = new WoopsaAdsServer(plcParameter.adsNetId);
WoopsaProperty propertyIsConnected;
WoopsaObject plc = null;
bool isWorking = false;
bool shouldShutDown = false;
lock (_rootWoopsaObject)
{
DiagnosticWindow.AddPlcStatus(new PlcStatus(plcParameter.name, false, "Starting up"));
propertyIsConnected = new WoopsaProperty(_rootWoopsaObject, "IsAlive" + plcParameter.name, WoopsaValueType.Logical, (property) => serverConnection.isAdsConnected);
}
while (!shouldShutDown)
{
if (serverConnection.IsHeartBeatAlive())
{
serverConnection.isAdsConnected = true;
if (!serverConnection.isHierarchieLoaded)
{
if (plc != null)
{
plc.Dispose();
}
lock (_rootWoopsaObject)
{
plc = new WoopsaObject(_rootWoopsaObject, plcParameter.name);
}
serverConnection.loadHierarchy(plc);
}
if (!isWorking)
{
isWorking = true;
DiagnosticWindow.AddToDebug(Thread.CurrentThread.Name + " thread : working...");
lock (_rootWoopsaObject)
{
DiagnosticWindow.PlcStatusChange(plc.Name, isWorking, "Working");
}
}
}
else
{
serverConnection.isAdsConnected = false;
serverConnection.isHierarchieLoaded = false;
if (plc != null)
{
plc.Dispose();
}
DiagnosticWindow.AddToDebug(Thread.CurrentThread.Name + " - Error connection ... Try again");
isWorking = false;
lock (_rootWoopsaObject)
{
DiagnosticWindow.PlcStatusChange(plcParameter.name, isWorking, "Error");
}
}
Thread.Sleep(500);
lock (plcParameterList)
{
shouldShutDown = _shouldStop;
}
}
serverConnection.Dispose();
}
catch (SocketException e)
{
// A SocketException is caused by an application already listening on a port in 90% of cases
// Applications known to use port 80:
// - On Windows 10, IIS is on by default on some configurations. Disable it here:
// http://stackoverflow.com/questions/30758894/apache-server-xampp-doesnt-run-on-windows-10-port-80
// - IIS
// - Apache
// - Nginx
// - Skype
DiagnosticWindow.AddToDebug("Error: Could not start Woopsa Server. Most likely because an application is already listening on port 80.");
DiagnosticWindow.AddToDebug("Known culprits:");
DiagnosticWindow.AddToDebug(" - On Windows 10, IIS is on by default on some configurations.");
DiagnosticWindow.AddToDebug(" - Skype");
DiagnosticWindow.AddToDebug(" - Apache, nginx, etc.");
DiagnosticWindow.AddToDebug("SocketException: " + e.Message);
MessageBox.Show("SocketException ! : See diagnostic log for more information", "Er ror", MessageBoxButton.OK, MessageBoxImage.Error);
}
catch (Exception ex)
{
Application.Current.Dispatcher.Invoke(
System.Windows.Threading.DispatcherPriority.Normal,
new Action <Exception>((exc) =>
{
throw new Exception("Exception from another Thread : " + Thread.CurrentThread.Name, exc);
}), ex);
}
DiagnosticWindow.AddToDebug(Thread.CurrentThread.Name + " thread: terminating gracefully.");
lock (_rootWoopsaObject)
{
lock (App.appLock)
{
if (App.isExiting)
{
return;
}
}
DiagnosticWindow.PlcStatusChange(plcParameter.name, false, "Stop");
}
}